GB1406986A - Automatic torque control system for motors - Google Patents

Automatic torque control system for motors

Info

Publication number
GB1406986A
GB1406986A GB349074A GB349074A GB1406986A GB 1406986 A GB1406986 A GB 1406986A GB 349074 A GB349074 A GB 349074A GB 349074 A GB349074 A GB 349074A GB 1406986 A GB1406986 A GB 1406986A
Authority
GB
United Kingdom
Prior art keywords
motor
voltage
speed
amplifier
constant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB349074A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unisys Corp
Original Assignee
Burroughs Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Burroughs Corp filed Critical Burroughs Corp
Publication of GB1406986A publication Critical patent/GB1406986A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/2855—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/90—Specific system operational feature
    • Y10S388/902—Compensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/923—Specific feedback condition or device
    • Y10S388/93—Load or torque

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

1406986 Motor torque control BURROUGHS CORP 25 Jan 1974 [30 March 1973] 03490/74 Headings H2J The torque produced by a servo-motor is kept constant despite speed changes, by the provision of a motor speed sensing means, a servo amplifier providing input voltage to the motor, and switching means responsive to the speed sensing means for switching the input of the amplifier from a voltage representing either a predetermined maximum motor voltage or a motor-speed sensitive voltage, to a voltage representing the motor armature current. In a first embodiment, the motor is started from rest by the application of a constant, maximum voltage to the amplifier. The motor accelerates without constant torque until a first speed S 1 is reached whereat a latching circuit responsive to the speed sensing means, e.g. a tachogenerator, causes a transistor switching circuit to apply a voltage derived from the armature current to the amplifier input whereby the speed of the motor may vary at constant torque. If a lower speed S 2 is attached, the latch reverts to its former state and the motor is accelerated back to S 1 by means of the constant voltage. In a second embodiment, a second amplifier having a gap equal to the damping constant of the motor is provided between the first amplifier and the starting voltage input to which input is also added the tachogenerator output.
GB349074A 1973-03-30 1974-01-25 Automatic torque control system for motors Expired GB1406986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US346347A US3873901A (en) 1973-03-30 1973-03-30 Automatic torque control system for motors

Publications (1)

Publication Number Publication Date
GB1406986A true GB1406986A (en) 1975-09-24

Family

ID=23358968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB349074A Expired GB1406986A (en) 1973-03-30 1974-01-25 Automatic torque control system for motors

Country Status (2)

Country Link
US (1) US3873901A (en)
GB (1) GB1406986A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150791A (en) * 1979-05-14 1980-11-22 Hitachi Ltd Motor driving circuit
US4860231A (en) * 1985-12-16 1989-08-22 Carrier Corporation Calibration technique for variable speed motors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH461574A (en) * 1966-12-21 1968-08-31 Bosch Gmbh Robert Drive arrangement, in particular for an electric vehicle
US3515971A (en) * 1967-09-07 1970-06-02 Gen Electric Motor control system with feedback and variable gain amplifier responsive to current
US3543115A (en) * 1967-09-26 1970-11-24 Eaton Yale & Towne Electric motor speed control
NL6903439A (en) * 1969-03-06 1970-09-08
JPS513044B1 (en) * 1969-11-14 1976-01-30

Also Published As

Publication number Publication date
US3873901A (en) 1975-03-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee